Magnetism

When an electric current passes through steel, it creates a magnetic field within the steel. This magnetic field aligns the magnetic domains in the steel, causing it to become a permanent magnet. The alignment of the magnetic domains allows the steel to retain its magnetism even after the electric current is removed.

Yes, a moving magnetic field can induce an electric current in a conductor, according to Faraday's law of electromagnetic induction. This phenomenon is the basis for many applications of electrical generators and transformers.

You can use a device that detects magnetism. A compass needle may suffice.

Electromagnetism is the force that results from the interaction of electric charges and magnetic fields. It governs the behavior of electrically charged particles and is responsible for the attraction and repulsion between them. It plays a crucial role in many everyday devices, such as motors, generators, and transformers.

In the game Pajama Sam: No Need to Hide When It's Dark Outside, you can use the magnet by clicking on it in your inventory and then clicking on the lunch box to pick it up. Make sure you are close enough to the lunch box and have the magnet selected in your inventory to successfully grab it.

Neither. Aluminum Foil has no magnetic properties.

When another charge is added to the system, the electric field due to the first charge will be affected. The electric field will combine or interfere with the new charge's field, resulting in a new overall electric field in the region. The strength and direction of the electric field at a point will be determined by the superposition of the fields due to each individual charge.

It's primary usage is to determine the nature of an induced EMF from changes in the magnetic flux through a circuit. However, you must use Faraday's Law (and a unit conversion factor) to determine the SIZE of such an EMF.

When an object is grounded, it means that it is connected to the Earth through a conductor, such as copper wire, to allow charges to move freely between the object and the Earth. This helps to prevent the buildup of excess charge on the object and protects against electrical shock or damage from static electricity.

For magnets to function properly, they require a magnetic material (such as iron, nickel, or cobalt) and the presence of a magnetic field. The alignment of the magnetic domains in the material needs to be set either by an external magnetic field or by the material itself being magnetized.

The purpose is to counteract the feld distorsion that is caused by the armature current. If this is left as is , the commutation properties of the gnerator will be disturbed, the commutation will not take place in the neutral zone and brush sparking occurs.

With correctly sized commutating poles the commutation at the brushes will be in the neutral zone regarless of armature current, no sparking occurs, and a anual adjustment of the brushgear position at different loads is not needed

Screwdrivers are sometimes magnetized to help hold screws in place, making it easier to start and drive them into surfaces. The magnetic tip can also assist in retrieving dropped screws or small metal objects in hard-to-reach places.

They will combine to make a single magnetic field.

what is a keeper used for

Yes, paper clips are typically made of steel which is magnetic, so they can stick to magnets.

Some water heaters may use magnets in water treatment systems to help reduce buildup of minerals in the tank and piping. This can help prevent issues such as scale buildup and increase the efficiency of the water heater. However, not all water heaters use magnets for this purpose.

does magnetic forces pass through cardboard?

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Very easily. Lay a paperclip on a sheet of cardboard. Place a magnet beneath the cardboard. When you move the magnet, the paperclip will also move.

To turn off the magnet in the mission, you can either deactivate the power source that is supplying it or physically remove the magnet itself. It is important to follow safety protocols and instructions to ensure proper procedure is followed when dealing with magnets.

Magnets have negative and positive ends due to the orientation of their magnetic fields, which arise from the alignment of the magnetic moments of the atoms within the material. The positive and negative designations refer to the direction of the magnetic field lines created by the magnet, with opposite poles attracting each other and like poles repelling.

MR (magnetoresistance) refers to the change in electrical resistance of a material in response to an applied magnetic field. GMR (giant magnetoresistance) is a specific type of magnetoresistance that occurs in layered structures, where the resistance changes significantly due to the alignment of the magnetic moments within the layers. In other words, GMR is a more pronounced effect compared to general magnetoresistance.

No, a magnet cannot pull through paper because paper is not a magnetic material and does not attract to magnets. Magnets can only attract materials that contain iron, nickel, or cobalt.

Not all materials can be magnetized permanently because they don't have unpaired electrons in their atomic structure. Only materials with unpaired electrons can align their spins to create a magnetic field and exhibit magnetic properties. Materials like iron, nickel, and cobalt have this property and can be magnetized.

Magnets attract to metal because the metal contains free-moving electrons that align with the magnetic field. Metals do not attract to other magnets because they do not have their own magnetic field to interact with the external magnetic field. Magnetism in metals is due to the alignment of the electrons rather than having their own magnetic field.

No. As far as I remember geographic north pole is on the northern most part of the world and the magnetic north pole is a little to the off from the direct north (I don't remember how far or which direction).

To add to the above correct answer, the earth's magnetic north pole is currently situated about 1600 km (1000 miles) distant from it's geographic pole, and is in the vincinity of Bathurst Island in Canada's north. For unknown reasons it shifts somewhat over time, but does not consistently shift in the same direction. Naturally, so does the south magnetic pole.

ok, not exactly a techie, but I do know my stuff. in short, they do repel. every magnet has to sides, a south and a north, like sides repel,oppositesattract, blablabla, you learned all of this a long time ago. well, a neocube's magnets are no different: each magnet has a south and a north, just like any other self respecting magnet. when put together in a cube (or any other shape, for that matter) all of the spheres have their south poles on one side, and the north poles on the other. the cube itself will form one large magnet as it were, having both a south pole and a north pole, dictated by theorientationof the mini spheres. this also means that if you were to take two assembled neocubes and bring their like sides near each other, they would repel. if you brought theiroppositesides close, then they would yank together and smash into a giant crumpled mess.